1–5 Jul 2019
Geological Museum
Europe/Copenhagen timezone

ELM WDs in Double Degenerates: Formation and the significance for LISA

1 Jul 2019, 15:00
20m
Main Auditorium (Geological Museum)

Main Auditorium

Geological Museum

Øster Voldgade 5-7 DK-1350 Copenhagen

Speaker

Zhenwei Li (Yunnan Observatories, Chinese Academy of Science)

Description

Extremely low-mass white dwarfs (ELM WDs) are helium WDs with a mass less than $\sim 0.30\;M_\odot$. Most ELM WDs are found in double degenerates (DDs) in the ELM Survey led by Brown and Kilic. These systems are supposed to be significant gravitational-wave (GW) sources in the mHz frequency. In this talk, I first systematically investigated the formation of ELM WDs in DDs by a combination of detailed binary evolution calculation and binary population synthesis, and then compared our results with the observations. Finally, I will explore the GW radiation of such systems and make a prediction for future space-based interferometric GW detectors. See the paper for more details.

Primary author

Zhenwei Li (Yunnan Observatories, Chinese Academy of Science)

Co-authors

Prof. Chen Xuefei (Yunnan Observatories, Chinese Academy of Science) Dr Chen Hai-liang (Yunnan Observatories, Chinese Academy of Science) Prof. Han Zhanwen (Yunnan Observatories, Chinese Academy of Science)

Presentation materials

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